J2EE軟件開發(fā)-實驗報告

1、J2EE軟件開發(fā)課程實驗報告姓名 王 爍 學(xué)號 201308003104 專業(yè) 軟件工程 班級 1301 指導(dǎo)教師及職稱 程文志(助教) 開課學(xué)期 2015 至 2016 學(xué)年 下 學(xué)期上課時間 2016 年 4 月 28 日 湖南科技學(xué)院教務(wù)處編印實驗題目Servlet表單驗證碼的設(shè)計1 實驗?zāi)康模?) 熟悉Servlet的處理流程；2) 能夠在頁面中熟練的使用Servlet生成驗證碼；3) 熟悉Web開發(fā)的流程；4) 掌握頁面設(shè)計的各種技巧。2 軟硬件環(huán)境：軟件環(huán)境：MyEclipse、JDK環(huán)境硬件環(huán)境：電腦一臺3 實驗內(nèi)容簡述：a) 完成一個表單驗證碼的設(shè)計：在驗證生成之前，有一個選擇

2、界面，該界面有兩個選項；(form.jsp)(1) 4位或6位的選擇，對應(yīng)生成驗證碼為4位或6位；(2) 驗證碼內(nèi)容的選擇：內(nèi)容分為三種(數(shù)字、字母、數(shù)字+字母)b) 驗證碼的生成要求采用Servlet來生成，其它界面可以用jsp來響應(yīng)；c) 登陸頁面：(login.jsp) (提示：JavaScript的代碼)(1) 用戶名、密碼存儲在web.xml文件(context-parm存儲)；(2) 驗證碼點擊后會生成新的驗證；d) 驗證頁面：(1) 用戶名、密碼錯誤，就返回登陸頁面，并提示登陸錯誤的相關(guān)信息(用戶名和密碼錯誤)；(2) 驗證碼錯誤，就提示驗證碼錯誤；(3) 用戶輸入的驗證碼不分大

3、小寫。e) 驗證成功：(1) 提示：登錄成功；(2) 登陸成功后，就顯示個人信息，要求采用兩列表格姓名張三-$name學(xué)號2013000b) 以列表的方式顯示所有的用戶信息，包含(用戶名、密碼、姓名、學(xué)號、專業(yè)、班級、學(xué)院);5) 數(shù)據(jù)處理(web.xml)將用戶名和密碼存儲在web.xml文件中。4實現(xiàn)過程#choosestyles.jsp dynamicVerificationCode.html 選擇驗證碼規(guī)格 驗證碼長度 1 100 驗證碼類型 !- - 字母 數(shù)字 #login.jsp base href= login.jsp function reload() document.ge

4、tElementById(identityImage).src=generateImg.action?ts= + new Date().getTime(); 請登錄 用戶名： 密碼： #validating.jsp base href= 登錄中. USERINPUT SYS INFO #home.jsp base href= HOME 歡迎回來，$userName. 注銷 姓名： $studentName 學(xué)號： $studentNumber #GetIdentityStylesServletpackage com.shawn.controller;import java.io.IOExcep

5、tion;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class GetIdentityStylesServlet extends HttpServlet public GetIdentityStylesServlet() super();p

6、ublic void destroy() super.destroy(); / Just puts destroy string in log/ Put your code herepublic void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException int length = Integer.valueOf(request.getParameter(length).intValue();String types = request.getP

7、arameterValues(type);request.getSession().setAttribute(length, length);request.getSession().setAttribute(types, types);response.sendRedirect(login.jsp);public void init() throws ServletException #DynamicVerificationCodeServletpackage com.shawn.controller;import com.shawn.model.VerificationCodeFactor

8、y;import com.sun.image.codec.jpeg.JPEGCodec;import com.sun.image.codec.jpeg.JPEGImageEncoder;import java.awt.Color;import java.awt.Font;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.IOException;import java.util.Random;import javax.servlet.ServletException;import javax

9、.servlet.ServletOutputStream;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class DynamicVerificationCodeServlet extends HttpServlet private static final long serialVersionUID = 1L;/* * Constructor of the object

10、. */public DynamicVerificationCodeServlet() super();public void destroy() super.destroy(); / Just puts destroy string in log/ Put your code herepublic void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException response.setContentType(image/jpeg);Integer

11、length = (Integer) request.getSession().getAttribute(length);String types = (String) request.getSession().getAttribute(types);System.out.println(length);System.out.println();for(String x : types)System.out.println(x);int type = 0;if(types.length = 3 | types0.equals(hidden)type = 0;elseif(types0.equa

12、ls(number)type = 1;elsetype = 2;String randomString = VerificationCodeFactory.getVerificationCode(length, type);request.getSession().setAttribute(randomString, randomString);int width = (int) (12.5 * length);int height = 30;Color color = VerificationCodeFactory.getRandomColor();Color reverse = Verif

13、icationCodeFactory.getReverseColor(color);System.out.println();BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);Graphics2D g = bi.createGraphics();g.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 16);g.setColor(color);g.fillRect(0, 0, width, height);g.setColor(reverse);g

14、.drawString(randomString, 5, 20);Random random = new Random();for (int i = 0, n = random.nextInt(100); i n; i+) g.drawRect(random.nextInt(width), random.nextInt(height), 1, 1);ServletOutputStream out = response.getOutputStream();JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);encoder.enc

15、ode(bi);out.flush();/* * Initialization of the servlet. * * throws ServletException if an error occurs */public void init() throws ServletException / Put your code here#package com.shawn.controller;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.RequestDispatcher;import ja

16、vax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class LogoutServlet extends HttpServlet /* * Constructor of the object. */public LogoutServlet() super();/* * Destruction of the servle

17、t. */public void destroy() super.destroy(); / Just puts destroy string in log/ Put your code here/* * The doGet method of the servlet. * * This method is called when a form has its tag value method equals to get. * * param request the request send by the client to the server * param response the response send by the server to the client * throws ServletException if an error occurred * throws IOException if an error occurred */public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException request.getSession().invalidate();response.sen